Help Connor Save an Injured Cat

Hi I’m Connor, I was at school in the parking lot and I saw an abandoned cat who couldn’t walk. We took him to the vet and I’m asking for help since the injuries seem extensive. So far they have ran a bunch of tests but still need to do an ultrasound, blood work etc to make sure he’s not bleeding internally.

Update: He has a traumatic hernia which the surgery can cost upward of 4000$ Please anything helps